how to judge some bytes is or not a-z,A-Z?

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Roger
Roger on 27 Jun 2014
Edited: Mischa Kim on 27 Jun 2014
i read some files using fread ,then some bytes display like blank , but there is sth.,i want to delete these special chars ,how to make it ? thanks

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Accepted Answer

Mischa Kim
Mischa Kim on 27 Jun 2014
Edited: Mischa Kim on 27 Jun 2014
Roger, use regular expressions, something like
str = 'a b{}c1230O /&" â'
str =
a b{}c1230O /&" â
str_rep = regexprep(str,'[^a-zA-Z0-9]','')
str_rep =
abc1230O

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